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authorEric Andersen <andersen@codepoet.org>2002-07-10 04:32:03 +0000
committerEric Andersen <andersen@codepoet.org>2002-07-10 04:32:03 +0000
commit64bfb23ea641191b6266b637269d41b99b9597ca (patch)
tree82aba663ead95672eaa4fe7aba5d076f1eca7f10 /libc/inet
parentfbede14cba2d835fe9e474db3cf5912187ee4c58 (diff)
Per bug report from Ronald Wahl <rwa@peppercon.com>:
...inet_pton breaks since tolower is implemented as a macro and its argument is evaluated more than once: while ((ch = tolower (*src++)) != '\0') { So I fixed it by just undefining tolower() so we use the function version, not the macro. -Erik
Diffstat (limited to 'libc/inet')
-rw-r--r--libc/inet/ntop.c35
1 files changed, 16 insertions, 19 deletions
diff --git a/libc/inet/ntop.c b/libc/inet/ntop.c
index b7e831d49..bcdc57df8 100644
--- a/libc/inet/ntop.c
+++ b/libc/inet/ntop.c
@@ -28,12 +28,7 @@
#include <errno.h>
#include <stdio.h>
#include <string.h>
-
-#ifdef __UCLIBC_HAS_IPV6__
-#define INET_IPV6
-#define SPRINTF(a) sprintf a
#include <ctype.h>
-#endif
/*
@@ -95,13 +90,10 @@ inet_ntop4(const u_char *src, char *dst, size_t size)
* Paul Vixie, 1996.
*/
-#ifdef INET_IPV6
+#ifdef __UCLIBC_HAS_IPV6__
static const char *
-inet_ntop6(src, dst, size)
- const u_char *src;
- char *dst;
- size_t size;
+inet_ntop6(const u_char *src, char *dst, size_t size)
{
/*
* Note that int32_t and int16_t need only be "at least" large enough
@@ -169,7 +161,7 @@ inet_ntop6(src, dst, size)
tp += strlen(tp);
break;
}
- tp += SPRINTF((tp, "%x", words[i]));
+ tp += sprintf(tp, "%x", words[i]);
}
/* Was it a trailing run of 0x00's? */
if (best.base != -1 && (best.base + best.len) == 8)
@@ -185,7 +177,7 @@ inet_ntop6(src, dst, size)
}
return strcpy(dst, tmp);
}
-#endif /* INET_IPV6 */
+#endif /* __UCLIBC_HAS_IPV6__ */
/* int
@@ -248,12 +240,17 @@ inet_pton4(const char *src, u_char *dst)
* Paul Vixie, 1996.
*/
-#ifdef INET_IPV6
+#ifdef __UCLIBC_HAS_IPV6__
+
+/* We cannot use the macro version of tolower() or very bad
+ * things happen when '*src++' gets evaluated multiple times.
+ * So * undef it here so we get the function version of tolower
+ * instead.
+ */
+#undef tolower
static int
-inet_pton6(src, dst)
- const char *src;
- u_char *dst;
+inet_pton6(const char *src, u_char *dst)
{
static const char xdigits[] = "0123456789abcdef";
u_char tmp[16], *tp, *endp, *colonp;
@@ -338,7 +335,7 @@ inet_pton6(src, dst)
return (1);
}
-#endif /* INET_IPV6 */
+#endif /* __UCLIBC_HAS_IPV6__ */
@@ -360,7 +357,7 @@ inet_ntop(af, src, dst, size)
switch (af) {
case AF_INET:
return (inet_ntop4(src, dst, size));
-#ifdef INET_IPV6
+#ifdef __UCLIBC_HAS_IPV6__
case AF_INET6:
return (inet_ntop6(src, dst, size));
#endif
@@ -392,7 +389,7 @@ inet_pton(af, src, dst)
switch (af) {
case AF_INET:
return (inet_pton4(src, dst));
-#ifdef INET_IPV6
+#ifdef __UCLIBC_HAS_IPV6__
case AF_INET6:
return (inet_pton6(src, dst));
#endif